Доведено випадкову ергодичну теорему типу теореми Какутанi. Введено поняття ентропії для динамiчних систем iз стацiонарною мiрою. При цьому доведено теорему, аналогiчну до теореми Абрамова-Рохлiна про ентропiю косого зсуву.

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